1/10
The H&R Handi-Rifle varmint barrels in .223 made before the year 2000 typically have a rate of twist of 1:12. This slower twist rate is generally suitable for stabilizing lighter bullets, typically in the 40 to 55 grain range. Later models and variations may have different twist rates, so it's always good to check specific models for confirmation.
The Springfield 1903 has a 1" in 10" twist rate. The later M1 service rifle also has a 1" in 10" twist rate.
it is a one in 12" rate of twist good for up to 55 gr. bullets may stabalize some 60 gr but heavier bullets may suffer in accuracy..... Turns out that ALL H&R/NEF .223 barrels made will be 1-9 twist starting in 2006. This is great news to those of us who want an inexpencive .223 rifle that can shoot heavy bullets.
It will vary with caliber.
1:16
The "rate of twist on rifling" is caliber specific. To give you an answer we would need to know which cartridge the rifle is chambered for.
1/10
The twist rate in a Browning Mountain Rifle typically varies depending on the specific model and caliber. For example, many of the popular calibers, like .270 Winchester or .30-06 Springfield, often have a twist rate of 1:10 inches. This rate is designed to stabilize a range of bullet weights commonly used in those calibers, ensuring better accuracy and performance. Always check the specifications for the exact model to confirm the twist rate for your particular rifle.
Them twist rate of a Winchester model 70 rifle in .223 Rem.is 1"in 9".
1 in 16"
Your Winchester model 70 bolt action rifle that is chambered in .300 Win Mag,has a twist rate of 1 in 10.
1 in 10". http://www.go2gbo.com/forums/index.php/topic,26264.0.html